diff --git a/util/test/demos/3rdparty/VulkanMemoryAllocator/vk_mem_alloc.h b/util/test/demos/3rdparty/VulkanMemoryAllocator/vk_mem_alloc.h
index fbeb3188a..1128cd9d6 100644
--- a/util/test/demos/3rdparty/VulkanMemoryAllocator/vk_mem_alloc.h
+++ b/util/test/demos/3rdparty/VulkanMemoryAllocator/vk_mem_alloc.h
@@ -10521,8 +10521,8 @@ void VmaRecorder::RecordCreatePool(uint32_t frameIndex, const VmaPoolCreateInfo&
         createInfo.memoryTypeIndex,
         createInfo.flags,
         createInfo.blockSize,
-        createInfo.minBlockCount,
-        createInfo.maxBlockCount,
+        (uint64_t)createInfo.minBlockCount,
+        (uint64_t)createInfo.maxBlockCount,
         createInfo.frameInUseCount,
         pool);
     Flush();
diff --git a/util/test/demos/d3d11/d3d11_video_textures.cpp b/util/test/demos/d3d11/d3d11_video_textures.cpp
index bf0c4fd04..e30f28e55 100644
--- a/util/test/demos/d3d11/d3d11_video_textures.cpp
+++ b/util/test/demos/d3d11/d3d11_video_textures.cpp
@@ -187,9 +187,9 @@ float4 main(v2f IN) : SV_Target0
   bool video_loaded = false;
 
   // implement IUnknown
-  ULONG AddRef() { return 1; }
-  ULONG Release() { return 1; }
-  HRESULT QueryInterface(const IID &iid, void **obj)
+  ULONG STDMETHODCALLTYPE AddRef() { return 1; }
+  ULONG STDMETHODCALLTYPE Release() { return 1; }
+  HRESULT STDMETHODCALLTYPE QueryInterface(const IID &iid, void **obj)
   {
     if(iid == __uuidof(IUnknown))
     {
@@ -205,7 +205,7 @@ float4 main(v2f IN) : SV_Target0
     return E_NOINTERFACE;
   }
   // implement IMFMediaEngineNotify
-  HRESULT EventNotify(DWORD ev, DWORD_PTR param1, DWORD param2)
+  HRESULT STDMETHODCALLTYPE EventNotify(DWORD ev, DWORD_PTR param1, DWORD param2)
   {
     if(ev == MF_MEDIA_ENGINE_EVENT_CANPLAY)
       video_loaded = true;
diff --git a/util/test/demos/d3d12/d3d12_video_textures.cpp b/util/test/demos/d3d12/d3d12_video_textures.cpp
index 38205411f..0a13826fc 100644
--- a/util/test/demos/d3d12/d3d12_video_textures.cpp
+++ b/util/test/demos/d3d12/d3d12_video_textures.cpp
@@ -338,7 +338,7 @@ float4 main(v2f IN) : SV_Target0
 
             for(UINT row = 0; row < numrows[i]; row++)
             {
-              memcpy(dstptr, srcptr, rowsizes[i]);
+              memcpy(dstptr, srcptr, (size_t)rowsizes[i]);
               srcptr += rowsizes[i];
               dstptr += layouts[i].Footprint.RowPitch;
             }
diff --git a/util/test/demos/demos.vcxproj b/util/test/demos/demos.vcxproj
index ed6a7e3b9..e71695470 100644
--- a/util/test/demos/demos.vcxproj
+++ b/util/test/demos/demos.vcxproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Development|x86">
+    <ProjectConfiguration Include="Development|Win32">
       <Configuration>Development</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
@@ -9,7 +9,7 @@
       <Configuration>Development</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x86">
+    <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>